European astronomers have reported results of a thirty-year study of a hypergiant star dubbed HR 8752 that passed through an evolutionary stage known as the Yellow Evolutionary Void – an unstable stage that can profoundly alter the evolution of a star. This is an artist’s impression of the hypergiant star HR 8752 (A.Lobel / ROB / SRON) Hypergiants are the most luminous stars known in the Universe. They are very rare objects, only 12 of them...